Electronic Theses and Dissertation

ABSTRAK



Tanah adalah suatu kumpulan atau gumpalan butiran-butiran mineral yang merupakan salah satu bagian dalam perencanaan suatu kontruksi. Tanah timbunan dengankualitas yang baik memerlukan pemadatan agar memperoleh tanah yang stabil dan memenuhi persyaratan untuk membangun suatu konstruksi. Tanah timbunan dengan kualitas yang baik memerlukan pemadatan agar memperoleh tanah yang stabil dan memenuhi persyaratan untuk membangun suatu konstruksi. Penelitian ini dilakukan pada Jalan tol Sigli-Banda Aceh kecamatan Seulawah Kabupaten Aceh Besar, sampel diambil dari jalan tol STA 14+900, STA 15+125 dan STA 16+500. Tujuan dari penelitian ini adalah untuk mengetahui nilai CBR laboratorium dan CBR design berdasarkan SNI 1744:2012 berdasarkan sampel jalan tol Kawasan Sigli – Banda Aceh. Data yang digunakan yaitu data sifat- sifat fisis seperti berat jenis, batas cair, analisa butiran dan data sifat mekanis. Hasil pengujian batas- batas Atterberg kemudian diperoleh hasil Indeks Plastisitas (PI) pada STA 14+900 9,15%, STA
15+125 3,82%, dan STA 16+500 0% yang berarti non plastisitas. Untuk nilai pengujian Modifeid Proctor menggunakan saringan No.4. Pada STA 14+900 didapatkan hasil γdmaks 1,583 gr/cm³ dan kadar OMC 21,15%, pada STA 15+125 γdmaks 1,640 gr/cm³ dan kadar OMC 20,21%, pada STA
16+500 γdmaks 1,737 gr/cm³ dan kadar OMC 13,12%. Dari pengujian CBR Rendaman didapatkan hasil CBR Design untuk STA 14+900 didapat hasil 6,81%, pada STA 15+125 didapat hasil 7,15%, dan pada STA 16+500 didapat hasil 7,01%. Hasil pengujian tanah berdasarkan CBR Rendaman dari ketiga sampel ini didapatkan kriteria tanah dasar sedang, karena nilai CBR yang didapat berkisar diantara 5 – 10.



Kata Kunci : Pemadatan Berat, Batas-batas Atterberg, CBR laboratorium, CBR design, SNI
1744:2012

ABSTRACT Soil is a collection or lump of mineral grains which is one part of the planning of a building. Filled soil with good quality requires compaction in order to obtain a stable soil and meet the requirements for building a construction. Filled soil with good quality requires compaction in order to obtain a stable soil and meet the requirements for building a construction. This research was conducted on the Sigli-Banda Aceh toll road, Seulawah sub-district, Aceh Besar district, samples were taken from the STA 14+900, STA 15+125 and STA 16+500 toll roads. The purpose of this study was to determine the value of laboratory CBR and design CBR based on SNI 1744:2012 based on a sample of the Sigli - Banda Aceh toll road. The data used are data on physical properties such as specific gravity, liquid limit, grain analysis and mechanical properties data. The results of the Atterberg limits test then obtained the results of the Plasticity Index (PI) at STA 14+900 9.15%, STA 15+125 3.82%, and STA 16+500 0% which means non-plasticity. For the Modifeid Proctor test value using the No.4 filter. At STA 14+900, the result is dmax 1.583 g/cm and OMC content is 21.15%, at STA 15+125 dmax 1.640 gr/cm³ and OMC content is 20.21%, at STA 16+500 dmax 1.737 gr/cm³ and 13.12% OMC content. From the Immersion CBR test, the results of CBR Design for STA 14+900 are 6.81%, for STA 15+125, the results are 7.15%, and for STA 16+500, the results are 7.01%. The results of soil testing based on the CBR immersion of these three samples obtained medium subgrade criteria, because the CBR values ​​obtained ranged from 5 - 10. Keywords: Heavy Compaction, Atterberg limits, laboratory CBR, CBR design, SNI 1744:2012